Rock or ore breaker.



Patented Jan. l4, I902.

. No. 653L339.

A. J. GATES 8. L W."CAPEN. Bock on'one BREAKER.

(Application filed. may 28, 1900.)

(No Model.)

ATTORNEY WITNESSES Tn: mums Pmns 00., marouma, wnsumo'rcn. D4 c.

rte mares ALBERT J. GATES AND THOMAS W.

CAPEN, OF CHICAGO, ILLINOIS, AS-

SIGNORS, BY MESNE ASSIGNMENTS, TO ALLIS-CHALMERS COMPANY, OF CHICAGO,ILLINOIS, A CORPORATION OF ILLINOIS.

f ROCK OR ORE BREAKER.

SPECIFICATION formingpart of Letters Patent No. 691,339, dated January14, 1902.

Application filed May 28,1900.

To all whom, it may concern.-

Be it known that we, ALBERT J. GATES and THOMAS WV. CAPEN, of Chicago,Illinois, have invented certain new and useful Improvements in Rock orOre Breakers, of which the following is a specification.

The invention relates particularly to that class of ore breakers andcrushers known as gyratory crushers, and especially to the means forholding the spider for journaling the upper end of the gyratory shaft,all of which will be more fully hereinafter set forth.

The principal object of the invention is to provide an ore-crusher ofthe gyratory type with a simple, economical, and efficient spider forjournaling the upper end of the gyratory shaft, which shall be free fromall shrinkage strains and which can be easily and rigidly fastened inoperative position; and the invention consists in the features,combinations, and details of construction hereinafter described andclaimed.

The accompanying drawing represents a perspective view of a spiderconstructed in accordance with our improvements shown in full lines,combined with and shown in operative position with the upper portion ofthe frame, which for convenience is shown in dotted outline.

In the art to which this invention relates it is well known that greatdifliculty is encountered in fitting the spider to the upper portion ofthe frame in that no matter how carefully the upper portion of the frameis turned or bored and the spider is turned or bored even with the useof the most accurate gages there is always great difficulty in fittingthe spider thereto in such a manner as to absolutely insure thealinement of the axis of the hub of the spider with the axis of the hubof the crushing-frame and at the same time being able to maintain suchperfect joint that under the working strain of the machine the jointwill not become loose and the parts destroyed by such lost motion.Heretofore in order to insure a tight fit and one that may be maintainedbetween the spider and the upper portion of the frame it has been commonpractice to make the rim Serial No. 18,240. (No model.)

the top of the frame by from one-quarter to one-half inch, thus allowingthe bolts which secured the spider to the top of the frame to draw thespider down into the taper fit securely and to maintain this joint bymerely keeping the bolts tight. This arrangement,

which will readily be seen, necessitated the accurate spacing betweenthe lugs on the spider and'the lugs on the upper part of the framethrough which the'securing-bolts were passed in order thatthe axis ofthe bore in the spider should be coincident with the axis of themachine, and if this were not accurately done the bearing for the shaftin the spider would not be perpendicular, and the shaft would bind inits journal.

It is also well known that in the ordinary spider, which consists of thecentral hub for journaling the crushing-shaft and of arms connectingthis hub with the rim of the spider, it is very difficult to overcomethe'shrinkage strains so as to prevent the rim of the spider breaking ata point where the arms connect with same, and also to prevent the hub ofthe spider cracking between the points where the arms connect.

The principal object of our in vention,there fore, is to provide acrusher with a spider of such construction and arrangement that therecan be no shrinkage strains set up in the casting and that the partialrim or feet of the spider may have a turned seat on the top portion ofthe main frame, thereby insuring perfect alinement of the axis of thespider and the axis of the machine, and so that the arms may be easilysprung and fastened securely into position, and which can at the sametime be easily removed for the purpose of repair to any parts of thecrusher which may become necessary.

In illustrating and describing our improvements we have only illustratedand described that which we consider to be new, taken in connection withso much that is old as will properly disclose the invention and enablethose skilled in the art to practice the same,

leaving out of consideration other and wellknown parts, which ifdescribed here would only tend to confusion, prolixity, and ambiguity.

In constructinga crusher in accordance with our improvements we use acrusher which is provided with any of the usual frames, and particularlywith the upper frame a, as shown in dotted outlines. The upperportion 1) of this frame is turned the desired size and provided with ashoulder formed by a flange c to receive the spider, as hereinafterdescribed.

In order to provide mechanism or a spider that will obviate the abovedifficulties, we make a spider comprising a hub d, which is bored outthe desired diameter to receive and furnish the upper bearing for thegyratory shaft, (not shown,) which is provided with two or more arms,but shown in the drawings with three arms 6 e e, each of such armsextending out from the hub and downwardly therefrom. The lower portionsof these arms are provided with sector-shaped lugs or feet j, which arebored on the inside of a diameter equal to the portion 19 of the shelland turned off on the bottom side to rest against the shoulder c.

From the foregoing it will be seen that when the parts are in positionand the hubbored the spider may be easily removed therefrom or returnedin position at any time or times, all that is necessary to accomplishthis result being to slightly and equally spring the arms of the spiderinto position. It will further be seen that since the rim of the spideris not continuous,shrinkage strains are done away with entirely at thispoint, and, further, that there can be no shrinkage strains on the hubof the spider, for the reason that the arms are not held by the rim soas to create such strain.

The spider feet or legs are bored transversely to receive bolts g, whichextend through the same and through grooves h in the shell and act tohold the parts firmly in position. These feet are also boredlongitudinally, as at 2', and also the shoulder of the upper portion ofthe frame, to receive bolts, which also act to hold the spider againstrotation.

There are many advantages incident to the use of a crusher fitted withour improvements, the principal ones being the ease with which thespider may be made and fitted into position, so as to bring about apositive alinement of the axes of the spider-hub and crusherframe,andthe absence of shrinkage strains on anypart of the spider.

We claim 1. In a rock and ore breaker, the combination with thecrushing-chamber wall of a shoulder upon the wall of thecrushiug-chamher, a spider comprising a heavy cast stationary hub andheavy T-shaped arms integral therewith which extend independentlyoutward beyond the rim of the crushing-chamber and are seated upon theshoulder thereon, and means for fastening the ends of the arms firmly inposition, substantially as described.

2. In a rock and ore breaker, the combination with the rim of thecrushing-chamber of a shoulder upon the rim, aspider comprising a heavycast stationary hub and heavy arms integral therewith which extendindependently outward beyond and are snapped to the rim of thecrushing-chamber and seated upon the shoulder thereon, and means forfirmly fastening the ends of the arms in position, substantially asdescribed.

3. In a rock and ore breaker, the combination with the crushing-chamberwall of a shoulder upon the wallof the crushing-chamher, a spidercomprising a heavy cast stationary hub and heavy arms integral therewithwhich extend independently outward to the wall of the crushing-chamberand downward to the shoulder thereon and are seated within the recessformed by the shoulder and crushing-chamber wall, and means forattaching the ends of the arms firmly to the shoulder and wallrof thecrushing-chamber, substantially as described.

ALBERT J. GATES. THOMAS W. CAPEN.

